Controlling system for railways.



PATENTED SBPT.10, 1907.

M. TRAUTMANN. CONTROLLING SYSTEM POR RAILWAYS.`

APPLIOATION FILED MAR. 21.1907.

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No. 865,'730. A PATENTED SEPT. 1o, 1907. M. TRAUTMANN. GONTROLLINGSYSTEM PoR RAILWAYS.

APPLICATION FILED HAR.21,1907.

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UNITED sTATirs PATENT OFFICE.

MAX TRAUTMANN, OF DRESDEN, GERMANY, ASSIGNOR TO BERTHA TRAUTMANN, NEESPRIE, OF DRESDEN, GERMANY.

CONTROLLING SYSTEM FOR RAILWAYS.

Specication of Letters Patent.

Patented Sept. 10, 1907.

Application led March 2l, 1907. Serial No. 363,755.

To all whom it may concern:

Be it known that I, MAX TRAUTMANN, a subject of the King of Saxony, andresiding at Dresden, Saxony, Germany, have invented certain new anduseful Im- 5 provements in Controlling Systems for Railways, of whichthe following is a description.

The present invention relates to a railway controlling-system, in whicha series of conductors divided into two groups and corresponding to thenumber of passing trains, is arranged, which conductors lead from theline to indicators and, at the place to be controlled, are put incircuit by suitable line-contacts operated by the passing trains.

The novel feature of the invention consists in that l5 the seri'es ofconductors are arranged in two groups in such a manner that the onegroup receives current when the train departs from a station, the saidcurrent freeing the indicator-drops by means of electromagnets so thatthey drop down against the action of a spring or their own weight, whilethe said indicator-drops close special circuits, provided at the placesto be controlled so that readjusting-magnets are lpermanently excitedand keep the indicator-drops in their dropped-down position. The othergroup receives current at the next station when the train arrives there,and this current interrupts the circuit closed by the indicator-drops bymeans of electromagnetic switches, so that said indicator drops returnto their initial position again.

In the accompanying drawings, Figure l is a diagram, showing theelectric railway controlling-system in connection with the railway-lineand Figs. 2 4 are details of the controlling-system.

A, B and C indicate switch-systems of the kind as used in telephony,which are arranged at those places at which the trains are to becontrolled, as, for instance, at stations, at switch-mens houses orsimilar places.

4, 5, 6 are conductors, to which'the said switchsystems are electricallyconnected. The said conductors are arranged in both directions along thetracks of the railway-lines to be controlled. I, 2, 3 are dropdevices,which are connected with the conductors 4, 5, 6 of the switch-systems,and the number of conductors and drops correspond to the number oitrai-ns passing over said line. The example shown in the drawingscomprises three trains.

Each of the drops l, 2, 3 of the-switchsystems A, B, C is, on the onehand, connected with one of the conductors 4, 5 and 6 of the track Gand, on the other hand, with the common line 7, which latter is inconductive connection with a current generator 8 provided at a suitableplace. In case the three dropsystems are arranged far from each other,then every drop system may have its own current generator.

9 and l0 are two contact-springs, which two springs are provided underevery single drop of the switchsystem, and insulated from each other.The springs 9 are in Contact with the conductors 4, 5 and 6, while thesprings l0 are," by means of lines 11,112, I3 each connected with relays24, which in turn are connected with relays 25 and thus earthed by thecommon line wire 26. At the controlling-places of the line in question,for instance, at stations, contact-devices H and J are provided near thetrack G, of which contactdevices the one, J, is installed at the side ofarrival, and the other, II, at the side`oi departure. The saidcontact-devices consist oi two posts 14 and I5 parallel to each other.The posts l5 are electrically connected with the ground, while the postsI4 are insulated. At the said posts 14 contact-springs 16, 17, 18 aremounted one below the other and insulated. These springs extend withtheir free ends over the posts l5, but in their initial position do nottouch the same. The springs 16, 17, I8 of the contact-device areconnected to the conductors 4, 5, 6. Likewise the springs 16, 17,18 oithe post .I are in connection with cable lines 20, 2l, 22, which arealso provided along the track G and led to the electromagnets D, E, F oithe said relays 24, 25. These electromagnets, by means of a common line27, lead with their other pole to the same pole of the current generatoras the drops-system l, 2, 3 by means ci the line 7,

The mode'oi operation of the controlling-system is as follows z-Prior tothe departure of every train a contactlever I9 (Fig. 4), arrangedsidewise at the engine, is adjusted in such a manner that, if the trainleaves the first station, one group of the contact-springs of thecontact-devices H and J, or instance, the springs I6 are touched by thesaid contact lever I9 and pressed with their free ends against the postI5. Circuit is then closed and the current flows from thecurrent-generator 8, over earth, post 15, spring I6, conductor 4 alongthe track G to the electromagnet-coils 23 ci the drops l and back to thecurrent generator 8 over the common line 7. The electromagnets attracttheirarmatures 30 (Fig. 2) and release the drops, to fall into ahorizontal position, while normally i. e. if the armatures 30 areswitched off, the drops are kept in a, vertical position owing to theweight ci the said armature. The dropped-down drop I of the system Aconnects in its horizontal position the contact-springs 9 and l0 and socloses a second circuit, which, flowing from the one pole of the currentgenerator 3 over the common line 7, coils 23 oi all drops l, springs 9and I0, line Il, relay-spring 25 of the magnet D and line 26, returns tothe other pole of the currentgenerator. By this circuit the magnets 23are permanently excited and keep the drops in their horizontal position.Now, when the train arrives at the next station the contact lever 19will press the spring 16 against the post 15 ths dosing a new Cil-CuibThe Current i for electrically connecting the lines of one group withthose' iiows now from the current-generator 8, over earth, post 15,spring 16, line 20 to the electromagnet D and returns over line 27 tothe current generator 8. Consequently the electromagnet D will beexcited and its armature 28 attracted, so that the contact at the relay25 will be interrupted and the electromagnet without current, so thatnow the drops return to their vertical positionl owing to the weight oithe armature 30. 1f the train starts, it influences again thecontact-device H so that the operation just described is repeated, andii the train arrives at the next station those operations will berepeated, which took place at the arrival oi the train as abovedescribed.

Now, in order that the otlicials at the several controlling places maybe informed, in which block-line the train is at the time in question,every drop is provided with an indicator. For this purpose over eachdrop of A, B and C there are arranged two contact-springs 32 and 33,which are connected with the said drop by a movable contact-piece 31.The rst contact-spring 32 is earthed, while the other contact-spring 33leads to a line 35, connected with the current-generator 8. 34 is anelectromagnet, which is arranged in the said line 35. The movablearmature 36 of the said electromagnet 34 carries a pawl 37, whichengages a step-wheel 39, rotatably mounted upon a stationary spindle 38,the said pawl 37 being designated to move stepwise the said stepwheel 39opposite to an indicator 40, rigidly fastened upon the said spindle 38.That side oi the step-wheel 39 which is in iront ot the indicator 40 isprovided with a scale, consisting ot division lines and iigures, whichare arranged in the present case so as to correspond to the daily to andfrom traffic of six trains on the said line.

As soon as a drop falls down, the step-wheel 39 is advanced for adivision line corresponding to one station in that the said dropestablishes connection between the movable contact-piece 31 and thespring 32, whereby the circuit, containing the electromagnet 34, isclosed, the armature 36 consequently attracted by the said electromagnetand thus the stepwheel 39 advanced, so that the figure just under theindicator 40 shows where the train in question is at the said time. Whenthe said drop slides off from the contact-piece 31 it returns to itsinitial position owing to its own weight, so that the circuit inquestion is opened again.

It is thus evident that the electric-indicating-device shows, in whichblock-line the train is at the time in question, while the drops merelyindicate whether the train is stopping at a station or is traveling.Other trains traveling on the same line will in the manner, asheretofore described, influence the springs 17 and 18 and thedrop-devices 2 and 3, connected with the said spring by means of thelines 5 and 6 and consequently a special contact-spring, line, drop,relay etc. must be provided for each train.

I claim as my invention:-

1. In electric controlling systems for railways the combination of twogroups of conductors, the one for starting and the other for arrivingtrains, a series of line-contacts of the other group, a series ofswitch-systems, means for closing a circuit to drop down drops and meansfor interrupting the circuit to return the said drops to their initialposition, substantially as described.

2. In electric controlling systems for railways the combination of twogroups of conductors, means for feeding current to one group when atrain starts, a` switch-system, means for dropping-down the drops of theswitch-system, means for holding the drops in their dropped-downposition, means for feeding current to the other group of conductorswhen the train arrives at the next station, means for interruptingl thecurrent fed to the first group of conductors and means for returning thedrops to their initial position again.

.3. In electric controlling systems for railways the comhina-tion of twogroups of conductors, means for feeding current to one group when atrain starts, a switch system, drops connected to the saidswitch-system, an electromagnet receiving current from the said firstgroup of conductors and dropping down the drops of the said switchsystem, circuits provided at the controlling places, such circuits beingclosed by the dropped-down drops, readjusting magnets, permanentlyexcited by the said circuits and holding the drops in their dropped-downposition, means for feeding current to the second group of conductors,when the train arrives at the next station, an electromagneticswitching-device, interrupting the said circuit, closed by thedropped-down-drops and returning the latter to their initial position,

4. In electric controlling-systems for railways, having a series ofconductors, corresponding to the number of the passing trains andarranged in two groups, line contacts operated by the passing trains andelectrically connecting the said conductors, indicating devices,connected with the said conductors, means for operating the saidindicating devices when the train passes one of the line contacts,substantially as described.

5. In electric controlling systems, for railways the combination of aswitch-system, of indicating drops, connected with the said switchsystem, a conductor, means for connecting the said conductor with thesaid indicating drops, a counter, an electromagnet, influencing the saidcounter and arranged in the said conductor, means for droppingdown theindicating drops, means for advancing the counter for one step at eachdropping-down of a drop and means for returning the drops into theirinitial position, substantially as described.

6. In electric controlling systems for railways the combination of twogroups of conductors, means for feeding current to the one group when atrain departs, a switchsystem, drops in connection with the saidswitch-system, means for dropping down the said drops and means forholding them in their dropped-down position, means for feeding currentto the other group of conductors, when the train arrives at the nextstation, means for breaking the current fed to the first group ofconductors and means for returning the drops to their initial position,a linewire, connected with the said switch system, an electromagnet,arranged in the said line wire, a counting device, influenced by thesaid electromagnet, means in connection with the two groups ofconductors and the said line wii'e for exciting the said electromagnetand closing a circuit between the dropped-down drops and the countingdevice, a dial at the said counting device, an indicator in connectionwith the counting device, and means for advancing the counting devicestepwise, when the circuit is closed by the traveling train,substantially as described.

In testimony whereoi l atlx mysignature in the presence of twowitnesses.

' MAX TnAU'rMi-INN.

Witnesses:

Molu'rz Srnnnn, RUDOLPH Fnicnn.

